﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DevComponents.DotNetBar;
using System.Text.RegularExpressions;





namespace Cocbook___modul_sale
{
    class Validate
    {
        public Boolean ISBN(string isbn) {
            string va = @"[a-zA-z]{0,7}$";
            Regex re = new Regex(isbn);
            Match ma = re.Match(va);
            if (ma.Success)
            {
                return false;
            }
            else
                return true;
        
        }


           
           
            
            
               
            
               


           
       
    }
}

